CLASS RACER FORUM - View Single Post - IHRA Pure Stock legal muffler suggestions

Myron Piatek · 09-14-2010, 12:08 PM

I have TTI 1 5/8"/1 3/4" step headers with their 3" X-pipe and Dynomax Ultraflo mufflers ending at the rear end housing on my car. Every indication was that I picked up ET with the combo, especially after removing the extra 60 lbs from elsewhere in the car to get back down to minimum and playing with the jetting. I might try their bullet-style in the future. But I'm not sure exactly what is legal for Pure Stock without looking it up.

This is going from open header with collector extensions which I ran for a couple of years before adding the exhaust system.

*** Oops! Just got home and looked up the rules - no straight-through mufflers in Pure Stock.
But the X-pipe should be worth looking into.

09-14-2010, 12:08 PM	#2
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: IHRA Pure Stock legal muffler suggestions I have TTI 1 5/8"/1 3/4" step headers with their 3" X-pipe and Dynomax Ultraflo mufflers ending at the rear end housing on my car. Every indication was that I picked up ET with the combo, especially after removing the extra 60 lbs from elsewhere in the car to get back down to minimum and playing with the jetting. I might try their bullet-style in the future. But I'm not sure exactly what is legal for Pure Stock without looking it up. This is going from open header with collector extensions which I ran for a couple of years before adding the exhaust system. *** Oops! Just got home and looked up the rules - no straight-through mufflers in Pure Stock. But the X-pipe should be worth looking into. Last edited by Myron Piatek; 09-14-2010 at 04:00 PM.